Love the Shoei pocket door! I am assuming you wish to keep the minimalistic look for the space. I would go with fabric roller shades inside and against the window, for reasons of simplicity and function and cost. You could go with light filtering or opaque. You would still be able to use the window sill for a decorative object or two if you wish - something that you would not be able to do with shutters. You mention wishing to block noise. If noise is an issue then cellular shades would help a bit more. Get ones with "fingertip lift" so that there are not tangle-y cords laying on the window sill or trailing down the wall when they are up. If you wish to maximize the view out, since the windows are so small, keep in mind that cellular shades will still block about more of the window than a roller shade will when up.

We have a master with a lake view and although it might be a bit more than your budget, we have a blackout cellular cordless shade with motorized lift. It goes across a window similar in span to the three panes on the left side of your photo. It has a remote control and it is a fun thing for us to press a button to behold the morning view from the bed before getting up. We have non-motorized cellular shades on our smaller windows.

Hey Rachel! Yes, texturing will matter when it's painted. If it's a faux finish, it will need to be sanded to promote adhesion. Also please keep in mind that if it's not fully sanded or skimcoated, much of the imperfections will be visible and it'll result in an uneven look. The accent wall should be the wall that you want to focus on when you walk into a room, the wall behind is very typical. Bold colors like navy, dark gray and blue/grays really pop!

Olivia- answering your question-I guess what you had originally is what I like. Navy curtains straight down. Skip the valance, would be great if you got rid of those wood blinds, but I understand if its a no go zone. Can I suggest room darkening curtains, they work well with blocking sunlight in the mornings. I did this in my room, just to avoid the whole blind thing and when I open the curtains the full window is exposed and lets in all the light. Agree with doods- longer rod, fuller curtains ( wider in size ). I have had 2 curtain panels stitched together to make a wider curtain before.. Not too high curtain rod setting either. Maybe a little puddling on floor to give it that romantic feel. Navy curtains I like, nice contrast against the lighter wall. Is that gold ( yellow ) in that artwork? ..so maybe add some gold accent in the room, either in throw blanket or throw pillow. Good luck!